1229133481 has 3 divisors (see below), whose sum is σ = 1229168541. Its totient is φ = 1229098422.

The previous prime is 1229133461. The next prime is 1229133509. The reversal of 1229133481 is 1843319221.

It is a happy number.

The square root of 1229133481 is 35059.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1843319221 = 37783 ⋅48787.

It is not a de Polignac number, because 1229133481 - 2²¹ = 1227036329 is a prime.

It is a super-2 number, since 2×1229133481² = 3021538228230354722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1229133461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 17530 + ... + 52588.

It is an arithmetic number, because the mean of its divisors is an integer number (409722847).

Almost surely, 2^1229133481 is an apocalyptic number.

1229133481 is the 35059-th square number.

1229133481 is the 17530-th centered octagonal number.

It is an amenable number.

1229133481 is a deficient number, since it is larger than the sum of its proper divisors (35060).

1229133481 is an frugal number, since it uses more digits than its factorization.

1229133481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70118 (or 35059 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The cubic root of 1229133481 is about 1071.1896051044.

The spelling of 1229133481 in words is "one billion, two hundred twenty-nine million, one hundred thirty-three thousand, four hundred eighty-one".